Question

The radius of a circular garden is 84m. inside it there is a 7 metre wide road along its circumference. find the area of this road​

Answer 1

Answer:

the roud at Rs.240 per m2.

Answer

Diameter =84 m, Radius =42 m

Outer radius =42+3.5 m =45.5 m

Outer area from center = πR2

=3.14×(45.5)2

=6500.58m2

Inner area = πr2=3.14×42×42

=5538.96m2

Area of round = (6500.58−5538.96)m2=961.62m2

Cost of construction = Rs. 2.40perm2

∴ cost of construction = Rs. 2.40×961.62

=Rs.2307.88.

Answer 2

Answer:

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